if tc.err == "" {
			if len(errs) != 0 {
				t.Errorf("unexpected invalid for test: %s\nErrors returned: %+v\nLocal diff of test objects (-old +new):\n%s", tc.name, errs, cmp.Diff(tc.old, tc.new))
			}
		} else {
			if len(errs) == 0 {
				t.Errorf("unexpected valid for test: %s\nLocal diff of test objects (-old +new):\n%s", tc.name, cmp.Diff(tc.old, tc.new))

FFF9..FFFB    ; disallowed                             # 3.0  INTERLINEAR ANNOTATION ANCHOR..INTERLINEAR ANNOTATION TERMINATOR
FFFC          ; disallowed                             # 2.1  OBJECT REPLACEMENT CHARACTER
FFFD          ; disallowed                             # 1.1  REPLACEMENT CHARACTER
FFFE..FFFF    ; disallowed                             # 1.1  <noncharacter-FFFE>..<noncharacter-FFFF>